浅埋深复杂条件巷道围岩变形规律及稳定性分析
Deformation law and stability analysis of surrounding rock in shallow buried and complex conditions
郭小六 1孟祥甜 2谢福星3
作者信息
- 1. 山西焦煤霍州煤电雪坪煤业有限公司,山西临汾 041000
- 2. 天地科技股份有限公司,北京 100013
- 3. 北京中煤矿山工程有限公司,北京 100013;矿山深井建设技术国家工程研究中心,北京 100013
- 折叠
摘要
浅埋深条件下巷道掘进矿压显现规律复杂,加之在风氧化带、季节性河流和公路下伏巷道掘进,巷道围岩稳定性控制更为困难.为较好地掌握浅埋深复杂条件巷道掘进围岩变形破坏规律,采用普氏平衡拱理论和数值模拟对巷道掘进后的围岩变形破坏规律进行了分析研究,研究结果表明:巷道顶底部为卸压区,顶部影响范围小于30 m,风氧化带、季节性河流和公路下伏巷道掘进不对地面产生影响,可满足巷道掘进施工的安全性.研究成果可为类似条件巷道合理布置提供依据.
Abstract
The law of ground pressure during roadway tunneling under shallow burial conditions is complex,and the stability control of the surrounding rock during tunneling under wind oxidation zones,seasonal rivers,and roads is more difficult.In order to better understand the deformation and failure laws of the surrounding rock during roadway tunneling under complex conditions of shallow burial depth,the Protodyakonov equilibrium arch theory and numerical simulation were used to ana-lyze and study the deformation and failure laws of the surrounding rock after roadway tunneling.The research results show that the top and bottom of the roadway are within the top influence range of the pressure relief zone,which is less than 30 meters.The tunneling of roads under wind oxidation zones,seasonal rivers,and roads does not affect the ground and can meet the safety requirements for roadway tunneling construction.The research results can provide a basis for the rational layout of roads under similar conditions.
关键词
浅埋深/复杂地层/巷道掘进/围岩变形/稳定性Key words
shallow burial depth/complex strata/roadway excavation/surrounding rock deformation/stability引用本文复制引用
基金项目
天地科技公司其他内部研发项目天地建井自立科技项目(KJZH-2024-JJZD-02)
出版年
2024
NETL
NSTL
万方数据